Island



Patented Nov. 29, I898.

J. EATOUGH. FLAT GRINDING MECHANISM FOR CARDING MACHINES.

No. 6l5,0I6.

(Application filed Mar. 31. 1898..

(No Model.)

WITNESSES. IN VIN 75H UNITED STATES PATENT FFIcE.

JONATHAN EATOUGH, OF PAWTUOKET, RHODE ISLAND, ASSIGNOR TO THE I'IOI/VARD & BULLOUGII AMERICAN MACHINE COMPANY, LIMITED, OF

SAME PLACE.

FLAT-GRINDING MECHANISM FOR CARDlNG-MACHINES.

SPECIFICATION forming part of Letters Patent No. 615,016, dated November 29, 1898 Application filed March 31, 1898. Serial No. 675,869. (No model.)

To all whom it may concern.-

Be it known that I, JONATHAN EATOUGH, a subject of the Queen of Great Britain, residing at Pawtucket, in the county of Providence and State of Rhode Island, have invented a new and useful Improvement in Flat-Grinding Mechanism for Oarding-Machines; and I hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming partof this specification.

In revolving fiat carding machines the card-clothing requires to be ground as the flats are passed in the inserted position back,

over, and above the portion of the flats in contact with the cylinder of the carding-machine. In the passage of the flats under the grinder the same require to be guided and controlled, so as to secure microscopic accuco racy in the uniform grinding of the wires in the clothing of all the flats.

The object of the invention is to secure greater accuracy in control of the flats during the grinding and reduce the errors caused 2 5 by the wearing of the parts.

To this end the invention consists in the peculiar and novel construction by which the flatguiding device is controlled by a cam moved through a greater distance than the go flat, as will be more fully set forth hereinafter.

Figure 1 is a side view of part of a cardingmachine, showing the fiat-grinding mechanism. Fig. 2 is a side view of the flat-supporting mechanism. Fig. 3 is a transverse sec- 3 5 tional view of the flat-grinding mechanism on one side of the carding-engine.

In the drawings, 4 indicates the bracket, extending from each side frame of the carding-engine and forming the support of the flatgrinding mechanism; 5, the grinding-roll; 6, the adjustable bearing for the grinding-roll; 7, the revolving flats; 8, the chain connecting the flats. The flats of revolving-fiat cardingmachines are provided at the back near each end with a projecting gudgeon, which registers with the sprocket-wheels by which the endless series of flats are operated. To these gudgeons 9 the links of the endless chain 8 are pivotally secured. 0n the back of the flats, between the gudgeon 9 and the rib of the flat, the finished guiding-surface 10 forms one bearing of the flat and the surface 11, on

the end of the face of the flats, the other bearing-surface by which the flats are guided as they move over and nearly in contact with the carding-cylinder, and these guiding-surfaces on the flats are utilized to control the flats when in the reversed position. The wires of the clothing are ground, as is shown in the drawings.

0n the stud 12, which is secured to the bracket 4, a double sprocket-wheel is journaled. The sprocket-wheel 13 is in line with and engages with the gudgeons 9 on the flats 7, while the sprockets 14 operate the flat-guiding device consisting of the lever 15, pivotally supported at one end on the bracket 4. On the upper part of the lever 15 is the inwardlyprojecting guide 16, which forms the upper guide for the flats and bears on the surface 11 at the end of the face of the flats. The lever 15 has at its free end the toe 17 and is provided with an arm supporting the stud 18, on which the lever 19 is pivotally supported. This lever 19 has the weight 20 adjustably secured near one end. The arm 21 of the lever 19 bears on the surface 10 on the back of the fiat and holds the same against the curved guide 16. The toe 17 rests on the heel 22 of the lever 23, pivotally supported near the heel on a stud secured to the bracket 4. The free end of the lever 23 is provided with the pattern 24, coacting with the sprockets 14.

To enable others skilled in the art to apply and use my improved flat-grinding guide, I will more fully describe the operation of the same. The pattern 24 on the lever 23 is four times as far from the fulcrum of the lever 23 as is the contact-point of the toe 17 with the heel 19. The movement of the pattern end 0 of the lever 23 is thereby transmitted to the lever 15, reduced to one-fourth, and as the arm 21 bears on the flat at a point about halfway between the toe 17 and the fulcrum of the lever 15 the movement of the flat between 5 the bearing of the arm 21 and the guide 16 is reduced one-half or to one-eighth of the move ment of the pattern 24. This proportion may be altered if a larger or smaller cam is preferred. The pattern 24 is shown in the draw- 10o ings of such length that before the sprocket 14 in contact with the pattern leaves the same the next sprocket will be over the pattern and serve to control the levers 23 and 15. The shape of the pattern is such that the flats will be gradually raised as they pass under the grinding-roller to give to the wires the required inclined surface. As the flats pass under the grinding-roller in the direction indicated in Fig. 1 the gudgeons on the successive flats engage with and turn the sprocket-wheels 13 on each side of the carding-machine and with them the sprockets 14, which in passing over the pattern 2e depress the end of the lever 23 and gradually raise the toe end of the lever 15. The Weighted lever 19, holding by the arm 21 the flat against the guide 16, follows this movement. As each successive sprocket llcomes in contact with the pattern 24 and as each successive flat passes under the grinding-roll all the flats are successively guided and controlled by the pattern 2&- and all are ground uniformly. The sprockets It and the pattern 2-t are the only parts subjected to wear and any difference in the wear will aitectthe control of the flats only a fraction of the actual wear; but these parts can be made of material that will resist wear.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In a flat-grinding mechanism for carding-machines, the combination with the flats, the grinding-roll, and the guides, of sprockets rotated by the moving flats, a lever, and a pattern on the lever; whereby the grinding of the several flats is controlled by one pattern, as described.

2. In a mechanism for grinding the flats of revolvingflat carding-machines, the combination with the adjustable guides supporting the flats in their passage under the grindingroll, of a pattern, mechanism for operating the pattern, and a lever constructed to transmit the movement of the pattern to the guides at a reduced scale, as described.

3. In a fiat-grinding mechanism for carding-machines, the combination of the followin ginstrumentalities': the flats provided with gudgeons, a sprocket-wheel engaging with the gudgeons on the flats, sprockets rotated by the sprocket-wheel, an upper guide supported on a pivoted lever, a lever having a short arm controlling the guide-supporting lever, a pattern on the long arm of the lever, and a counterweighted lever; whereby the movement of the flats under the grinding-roll operates the guides and controls the grinding of the flats by a pattern moving through a greater distance than the flats, as described.

I. In a flat-grinding mechanism for carding-machines, the combination with the flats, the grinding-roll, and the bracket 4, of the lever 15, the guide 16, the toe 17, and the weighted lever 19 on the lever 15, of the sprocket-wheel 13, the sprockets 1i, the lever 23, the heel 22 near the fulcrum of the lever 23, and the pattern 2i on the long arm of the lever 23; whereby the grinding of the wires of the flats is controlled by the pattern, as described.

In witness whereof I have hereunto set my hand.

JONATHAN EATOUGI'I.

Vitnesses:

JOSEPH A. MILLER, J12, B. M. SIMMs. 

